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package com.netscape.jndi.ldap;

import java.util.Enumeration;
import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.event.EventDirContext;
import javax.naming.spi.InitialContextFactory;

public class LdapContextFactory implements InitialContextFactory {

    public Context getInitialContext(Hashtable<?, ?>  env) throws NamingException {
        Hashtable<Object, Object>  ctxEnv = (Hashtable<Object, Object>) env.clone();

        // Read system properties as well. Add a system property to the
        // env if it's name start with "java.naming." and it is not already
        // present in the env (env has precedence over the System properties)
        for (Enumeration<Object> e = System.getProperties().keys(); e.hasMoreElements();) {
            String key = (String) e.nextElement();
            if (key.startsWith("java.naming.")||
                key.startsWith("com.netscape.")) {
                if (ctxEnv.get(key) == null) {
                    ctxEnv.put(key,System.getProperty(key));
                }
            }
        }

        EventDirContext ctx = new LdapContextImpl(ctxEnv);
        return ctx;
    }
}

